| Ammonium
fluorosilicate 
Formulae:
(NH4)2SiF6
Molecular Weight: 178.15
UN.NO: 2854
HAZARD CLASS : 6.1
H.S.CODE: 2826.9000
Physical chemistry properties: Colorless,odorless
and poisonous crystal powder.α anda βtwo crystal
types.Isoaxis crystal for α type and cubic crysta
for β type.Relative density is 2.011 for α
type and 2.152 for βtype.Dissolved in water and
alcohol and undissolved in acetone.Stable in air,but
changed from β type to α type by storing in
high temperature environment for long time.
Introduction: It is used as disinfector
in zymurgy industry.Etchant in glass industry.Anti-bristl
etail reagent for textile.Also used in light metal moulded,electrode
posit,extracting potassium from greensand,artificial
cryolite and potassium chlorate production,baric analysis.
Quality standard:
Name
of chemicals |
chemical
composition |
| Appearance |
White
crystal |
| (NH4)2SiF6
% ≥ |
98 |
| H2SiF6
%≤ |
0.3 |
| SO42-
%≤ |
0.6 |
| H2O
%≤ |
0.6 |
| Water
undissolvable substance % ≤ |
0.5 |
Package
and transportation: Packed in two layers polyethylene
Knitting bag.Net weight 25kg.Please pay attention to
package bag for protecting the bag damage and dampness
in transportation.
|
